Wood-heel machine



May 7, 1929. w. J. SHAW WOOD HEEL MACHINE Filed July 21, 1925 //v 1/5/1 TOE M194 5) J 577% w A TTLENE Patented May 7, 1929.

UNITED STATES WESLEY J'. SHAW, OF HAVERHILL, MASSACHUSETTS, ASSIGNOR TO NEW ENGLAND 1,711,913 PATENT OFFICE.

WOOD HEEL 00., 0F HAVERHILL, MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS.

Application filed July 21,

The present invention relates to machines for operating on heels, and more particularly to machines for grooving 0r breasting wood heels.

A chief object of the invention is to provide an improved machine for manufacturing wood heels having substantially straight lines of intersection between the breast and the sides of the heel. Other and further objects will be explained hereinafter and will be particularly pointed out in the appended claims.

In the accompanying drawings, Fig. 1 is a front elevation of a machine constructed according to a preferred embodiment of the present invention; Figs. 2 and 3 are sections taken upon the lines 22 and 3-3, respectively, of Fig. 1, looking in the directions of the arrows; Fig. 4 is a plan of a heel adapted to be manufactured by the machine of the present invention; and Fig. 5 is a section taken upon the line 55 of Fig. 1, looking in the direction of the arrows.

A wood-heel block 2 is adapted to be clamped between a relatively stationary jaw 4 and a relatively movable jaw 6, as shown more particularly in Fig. 1. The jaws 4 and 6 are carried in pairs upon a jack 8 that is rotatable upon a shaft 10 in any desired Way. A wood-heel-shaping cutter 14 is rotatable upon a shaft 16 that is disposed parallel to the Shaft 10, and in the-same plane therewith. The jaws 4 and 6 are so positioned relatively to the shaft 10 that the blocks 2 clamped thereby will be caused to travel into the path of operation of the cutter 14 during the rotation of the jack. The'knife 14 is so shaped as to cut into the block 2, along the breast, a

concave groove or surface, indicated at 18 in Figs. 4 and 5. The shape of the surface 18 is therefore determined by the'path of movement of block 2 and the shape of the knife 14. The groove cut by the knife is indicated in Fig. 4, by the concave lines 16 and 18. Owing to the convexity of the path of travel of the block 2-past the cutter, however, the concave groove will be cut in the block 2 along a convex curve. The convex curve is indicated in Fig. 5 at 20.

In order to adjust the convexity and the position of the curve 20, the jaws 4 and 6 are made adjustable upon the jack 8. The jaw 4 is pivotally adjustable about a'pivot 36, and

may be locked in pivotally adjusted position WOOD-HEEL MACHINE.

1925. Serial No. 45,004.

by means of a screw threaded member 40, pivoted to the jaw 4 at 42, and locked in threadedly adjusted positionby lock nuts 44. The jaw 6 is longitudinally adjustable in a holder 45 that is adjustable on the jack 8 by means of a slot-and-pin arrangement 46, 48. The jaw 6 is adapted to clamp the block 2 against the jaw 4' by a screw-threaded member 50, threaded through one end of a lever 52 intermediately pivoted at 54, and the other end of which is loosely pivoted to the jaw 6 at 56. A stop is adapted to be engaged by the lever 52 to limit the opening movement of the jaw 6. A rest or gage is adj ustable by means of a pin-and-slot arrangement 64, 66, for adjusting the position occupied by the face of the block opposed to the breast.

. Vhat is claimed is: j

1. A machine for grooving heels having, in combination, means for clamping a heel block, a rotary-knife shaped to cut a concave groove in a heel block, the clamping means being adapted -to engage the top and the tread of a heel block with the breast of the heel block facing toward the knife, and means for revolving the clamping means about an axis parallel to the axis of rotation of the knife, the clamping means being positioned so as to cause the breast of the heel block clamped thereby to travel into the knife during the revolving of the clamping means, and the block being held by the clamping means against movement except. the movement of revolution about the parallel axis during the cutting action of the knife, whereby the concave groove is cut in the heel block along a gonvex curve.

2. A machine for grooving heels having,

in combination, a rotary jack having a plurality of circumferentially disposed heelblock clamps, and a rotary knife shaped to cut a concave groove in a heel block, the clamps beingadapted each to engage the'top and the tread of a heel block with the breast of the heel block facing away from the axis of the jack, the axis of rotation of the knife being parallel to the axis of rotation of the. jack, the clamps being positioned so as to cause the breasts of the heel blocks clamped thereby to travel into the knife during the rotationof the jack, and the block being held bythe clamps immovable relative to the jack during the cutting action of the knife, whereb the concave groove is cut in the heel block a ong a convex curve.

3. A machine for grooving heels having, in combination, a rotary jack having a plurality of pairs of heel-clamp jaws disposed circumferentially of the jack, a rotary knife shaped to cut a concave groove in a heel block, the axis of rotation of the knife being convex curve, and means for adjusting the jaws to clamp blocks of difi'erent size.

4. A machine for grooving heels'having,'

in combination, a rotary jack having a plurality of pairs of heel-clamp jaws disposed circumferentially of the jack, a rotary knife shaped to cut a concave groove in a heel block, the clamp jaws of each pair being adapted to engage the top .and jthe tread of a heel block with the breast of the heel block facing away from the axis of the jack, the clamp jaws being positioned, so that the breast of a heel block clamped by each pair of jaws shall travel'into the knife during the rotation of the jack, whereby the concave groove is cut in the breast of the heel vblock along a convex cur ve.

5. A machine for grooving heels having, in

- combination, a rotary jack having a plurality of pairs of heel-clamp jaws disposed circumferentially of the jack, a rotary knife shaped to cut a concave groove in a heel block, the clamp jaws of each pair being adapted to engage the top and the tread of a heel block with the breast of the heel block facing away from the axis of the jack and towards the knife, the clamp jawsbeing positioned so that the breast of a heel block clamped by each pair of jaws shall travel into. the knife during the rotation of the ack, whereby the concave groove is cut in the breast of the heel block along a convex ,curve, and means for continuously rotating the jack about the said axis, theclamp jaws being positioned upon the jack andrelatively to the knife so that the lines of intersection between the breast and the sides of the heel block shall be substantially straight.

6. A machine for grooving heels having, in combination, a rotary jack having a plurality of heel-block clamps disposed circumferentially of the j aek, a rotary knife shaped to cut a concave groove in a heel block, the clamps being each adapted to clamp a block so that the breast of the heel block shall face awayi'rom the axis of the jack and towards the knife, and the clamps being positioned so that the breast of a heel block clamped thereby shall travel into the knife during the rotation of the jack, whereby the concave groove is cut in the breast of the heel block along a convex'curve, and means for rotating WESLEY J; SHAW. 

